Abstract
The potentiodynamic behaviour of Ni in buffered borate electrolytes (7.6 ⩽ pH ⩽ 9.3) is investigated. The reactions taking place in the potential region of the Ni/Ni(OH)2 and Ni(II)/Ni(III) redox couples can be formally interpreted with the same reaction patterns postulated for the electrochemical behaviour of nickel in strongly alkaline media including the multiplicity of phases related to the corresponding reactants and products. The main differences between the electrochemical characteristics of nickel over the whole pH range are in the growth rate of the anodic film and the change of its structure in relation to its degree of hydration, overall oxidation state and inner ionic composition.
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Gassa, L.M., Vilche, J.R. & Arvía, A.J. A potentiodynamic study of anodic film formation on nickel in borate solutions. J Appl Electrochem 13, 135–145 (1983). https://doi.org/10.1007/BF00612474
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DOI: https://doi.org/10.1007/BF00612474